package edu.sctu.lab03;

import java.sql.*;
import java.util.ArrayList;
import java.util.List;

/**
 * Created by Administrator on 2018-5-24.
 */
public class Database {

    public List<User> getUserList(){
        List<User> userList = new ArrayList<>();

        // 3+1
        Connection connection = null;
        Statement statement = null;
        ResultSet resultSet = null;

        // t_users
        String sql = "select * from t_users";

        try {

            Class.forName("com.mysql.jdbc.Driver");
            connection = DriverManager.getConnection(
                    "jdbc:mysql://localhost:3306/sctu_javaweb_2018",
                    "root",
                    "123456"
            );

            statement = connection.createStatement();

            resultSet = statement.executeQuery(sql);

            while(resultSet.next()){


                int id = resultSet.getInt(1);
                String name = resultSet.getString(2);
                String password = resultSet.getString(3);

                // 封装
                User user = new User();
                user.setId(id);
                user.setName(name);
                user.setPassword(password);

                userList.add(user);
            }

            resultSet.close();
            statement.close();
            connection.close();

        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }

        return userList;

    }
}
